The ade4 Package - NexTag Supports Open Source Initiatives

80 dudi
dudi
Duality Diagram
Description
as.dudi is called by many functions (dudi.pca, dudi.coa, dudi.acm, ...) and not directly
by the user. It creates duality diagrams.
t.dudi returns an object of class ’dudi’ where the rows are the columns and the columns are the
rows of the initial dudi.
is.dudi returns TRUE if the object is of class dudi
redo.dudi computes again an analysis, eventually changing the number of kept axes. Used by
other functions.
Usage
as.dudi(df, col.w, row.w, scannf, nf, call, type, tol = 1e-07,
full = FALSE)
## S3 method for class 'dudi':
print(x, ...)
is.dudi(x)
redo.dudi(dudi, newnf = 2)
## S3 method for class 'dudi':
t(x)
Arguments
df
col.w
row.w
scannf
nf
call
type
tol
full
a data frame with n rows and p columns
a numeric vector containing the row weights
a numeric vector containing the column weights
a logical value indicating whether the eigenvalues bar plot should be displayed
if scannf FALSE, an integer indicating the number of kept axes
generally match.call()
a string of characters : the returned list will be of class c(type, "dudi")
a tolerance threshold for null eigenvalues (a value less than tol times the first one
is considered as null)
a logical value indicating whether all non null eigenvalues should be kept
x, dudi objects of class dudi
... further arguments passed to or from other methods
newnf
an integer indicating the number of kept axes